Results 41 to 50 of about 817,149 (293)

Geometry-based Estimation of Stability Region for A Class of Structure Preserving Power Grids [PDF]

, 2015
The increasing development of the electric power grid, the largest engineered system ever, to an even more complicated and larger system requires a new generation of stability assessment methods that are computationally tractable and feasible in real ...
Turitsyn, Konstantin, Vu, Thanh Long
core   +3 more sources

Upacicalcet: A Novel Intravenous Calcimimetic Agent for Patients Undergoing Hemodialysis With Secondary Hyperparathyroidism

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Secondary hyperparathyroidism (SHPT) is a common complication in patients receiving maintenance dialysis, driven by calcium and phosphate metabolism disturbances. Calcimimetics are central to the management of SHPT by enhancing calcium‐sensing receptor sensitivity and reducing parathyroid hormone secretion.
Fumihiko Koiwa, Daisuke Honda, Seigo Akari, Tadao Akizawa   +3 more
wiley   +1 more source

Physics-informed transient stability assessment of microgrids

iEnergy, 2023
With the integration of a voltage source converter (VSC), having variable internal voltages and source impedance, in a microgrid with high resistance to reactance ratio of short lines, angle-based transient stability techniques may find limitations ...
Priyanka Mishra, Peng Zhang
doaj   +1 more source

Contact Line Instability and Pattern Selection in Thermally Driven Liquid Films

, 2002
Liquids spreading over a solid substrate under the action of various forces are known to exhibit a long wavelength contact line instability. We use an example of thermally driven spreading on a horizontal surface to study how the stability of the flow ...
Bertozzi, Brzoska, Cazabat, Farrell, Greenspan, Grigoriev, Grigoriev, Jarrett, Kalliadasis, Kataoka, Kataoka, Kataoka, Kondic, Melo, Or, Oron, Roman O. Grigoriev, Semwogerere, Spaid, Tang, Trefethen, Troian, Tuck, V, Ye   +24 more
core   +1 more source

Transient dynamics and structure of optimal excitations in thermocapillary spreading: Precursor film model [PDF]

, 2006
Linearized modal stability theory has shown that the thermocapillary spreading of a liquid film on a homogeneous, completely wetting surface can produce a rivulet instability at the advancing front due to formation of a capillary ridge.
Dawn E. Kataoka, Friz V. G., Jeffrey M. Davis, Kataoka D. E., Kataoka D. E., Sandra M. Troian, Tanner L. H.   +6 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Transient Stability Analysis and Enhancement Strategies for AC Side of Hydro-Wind-PV VSC-HVDC Transmission System

Applied Sciences
To analyze and enhance the transient stability of a hydro-wind-PV VSC-HVDC transmission system, this paper establishes a transient stability analytical model and proposes strategies for stability improvement.
Xinwei Li, Yanjun Ma, Jie Fang, Kai Ma, Han Jiang, Zheren Zhang, Zheng Xu   +6 more
doaj   +1 more source

Synchronizing Torque-Based Transient Stability Index of a Multimachine Interconnected Power System

Energies, 2022
Newly developed tools and techniques are continuously established to analyze and monitor power systems’ transient stability limits. In this paper, a model-based transient stability index for each generator is proposed from the synchronizing torque ...
Albert Poulose, Soobae Kim
doaj   +1 more source

Non-linear autopilot design using the philosophy of variable transient response [PDF]

, 2009
The novel non-linear controller design methodology of Variable Transient Response (VTR) is presented in this research. The performance of VTR is compared to that of successful non-linear controller designs (such as Robust Inverse Dynamics Estimation and ...
Brindley, Joseph, Counsell, John M., Macdonald, Malcolm   +2 more
core   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source